We will be arriving in Rome on a Sunday evening from Positano (with a stop in Herculaneum) and checking into our apt. on via san Nicola de Cesarini, near the Torre Argentina. We will have our 9 (almost 10) year old son with us. He doesn't eat pizza (at least the red sauce American version).
Considering Ditterambo or Casa e Bottega Bistro. I think both are open on Sunday. Open to other suggestions, these were the ones I found on the wonderful apps from Elisabeth Minchilli and Katie Parla.